- About
-
The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 81 to 90 of 50759 (0.073 seconds)Spelling suggestions: "subject:"0nvironmental."" "subject:"anvironmental.""
| 81 |
Comparison of a modified and traditional rapid infiltration basin for treatment and control of nutrients in wastewater effluentCormier, Jessica 01 August 2018 (has links)
Rapid infiltration basins (RIB) have been historically used in Florida for groundwater recharge, effluent disposal, or a combination of both. However, this technique has proven ineffective in providing nitrogen control unless the RIB is modified in some manner. In this study, a traditional RIB was compared to a modified RIB constructed with manufactured biosorption activated media (BAM) to evaluate nitrate removal from reclaimed water. The RIBs are used for reclaimed and excess storm water disposal. Few, if any, studies have been published where BAM-modified RIBs have been used for this purpose. In this work, a mixture of clay, tire crumb, and sand (CTS) was selected to serve as the BAM material (Bold and Gold™ CTS media). Each RIB was constructed with two feet of either sand or BAM, covering more than 43,600 square feet of surface area. The BAM-modified RIB had an initial 90 pounds per cubic-foot in-place density, and the density of the control RIB approximated about 94 pounds per cubic-foot. Over an eight-month period, loadings to the BAM RIB and control RIB approximated 5.4 million gallons (MG) per acre each. Water samples, collected from lysimeters installed below the 2-foot of sand or BAM materials, were gathered monthly during 2017 (except for September and October due to the impacts of hurricane Irma); these samples were analyzed for water quality to determine nitrate removal. Soil moisture and weather data were also collected over the study period. This study demonstrated the nitrate removal effectiveness of a field-scale BAM-modified RIB as compared to a traditional field-scale sand-based RIB. Results suggest that BAM removed 30 percent more nitrates than the Control (78% and 47%, respectively) under the conditions of the study. Furthermore, BAM removed higher percentages of TN (31%) and TP (62%) than the Control (12% and 28%, respectively).
|
| 82 |
Modeling microbial growth and release of microbial volatile organic compounds (mVOCs) in carpet and dustHaines, Sarah Ruth January 2021 (has links)
No description available.
|
| 83 |
Creating and Implementing an Environmental Education Curriculum for an Upper Level Science CourseMinning, Logan S. 29 April 2005 (has links)
No description available.
|
| 84 |
ENVIRONMENTAL SCIENTIST II INTERNSHIP WITH SHAW ENVIRONMENTAL AND INFRASTRUCTURETurner, Michael 02 July 2012 (has links)
No description available.
|
| 85 |
Copper and Nickel Partitioning with Nanoscale GoethiteDanner, Kelsey Marie January 2013 (has links)
No description available.
|
| 86 |
EFFECT OF LAND USE ON MERCURY IN SOILS OF SOUTHWEST OHIOGamby, Rebecca L. 04 June 2014 (has links)
No description available.
|
| 87 |
Bioremediation of Acid Mine Drainage Contaminated Soil by <i>Phragmites australis</i> and Rhizosphere BacteriaGuo, Lin 11 September 2014 (has links)
No description available.
|
| 88 |
Reconstructing Holocene Glacier changes in West Greenland from multispectral imageryHuh, Kyung In January 2007 (has links)
No description available.
|
| 89 |
Environmental factors affecting Methylmercury in fish of the Laurentian Great Lakes regionHarvey, Joel January 2014 (has links)
No description available.
|
| 90 |
Stability of Monomethylmercury in WaterHarvey, Sarah Elyse 01 June 2015 (has links)
No description available.
|
Page generated in 0.0776 seconds